Convergence in the relationship of CO(2) and N(2)O exchanges between soil and atmosphere within terrestrial ecosystems
文献类型：SCI/SSCI论文
| 作者 | Xu X. F. ; Tian H. Q. ; Hui D. F. |
| 发表日期 | 2008 |
| 关键词 | carbon dioxide nitrous oxide soils terrestrial ecosystems nitrous-oxide emissions greenhouse-gas fluxes carbon-dioxide forest ecosystems nitric-oxide interannual variability northern peatlands brazilian amazon tropical forest trace gases |
| 英文摘要 | Ecosystem CO(2) and N(2)O exchanges between soils and the atmosphere play an important role in climate warming and global carbon and nitrogen cycling; however, it is still not clear whether the fluxes of these two greenhouse gases are correlated at the ecosystem scale. We collected 143 pairs of ecosystem CO(2) and N(2)O exchanges between soils and the atmosphere measured simultaneously in eight ecosystems around the world and developed relationships between soil CO(2) and N(2)O fluxes. Significant linear regressions of soil CO(2) and N(2)O fluxes were found for all eight ecosystems; the highest slope occurred in rice paddies and the lowest in temperate grasslands. We also found the dominant role of growing season on the relationship of annual CO(2) and N(2)O fluxes. No significant relationship between soil CO(2) and N(2)O fluxes was found across all eight ecosystem types. The estimated annual global N(2)O emission based on our findings is 13.31 Tg N yr(-1) with a range of 8.19-18.43 Tg N yr(-1) for 1980-2000, of which cropland contributes nearly 30%. Our findings demonstrated that stoichiometric relationships may work on ecological functions at the ecosystem level. The relationship of soil N(2)O and CO(2) fluxes developed here could be helpful in biogeochemical modeling and large-scale estimations of soil CO(2) and N(2)O fluxes. |
| 出处 | Global Change Biology |
| 卷 | 14 |
| 期 | 7 |
| 页 | 1651-1660 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1354-1013 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22661]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Xu X. F.,Tian H. Q.,Hui D. F.. Convergence in the relationship of CO(2) and N(2)O exchanges between soil and atmosphere within terrestrial ecosystems. 2008. |
入库方式： OAI收割
来源：地理科学与资源研究所
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